Baader Planetarium 90º Erecting Prism Diagonal - 2" - AMICI-2

No Ratings Yet

Write a Review


  • Your Price:
  • $299.00
  • + FREE Shipping

Leave us your email, and we’ll let you know when this item is back in stock.

  • This Baader 2" Amici Prism is optimally suited for daytime landscape viewing
  • Includes a 1.25" adapter so this 2" barrel diagonal can be used with both 2" and 1.25" eyepieces
  • Works best with refractors and Cassegrains
  • Precise, smooth, flat polishing for accurate positions and angles
  • 7-layer multicoatings
Questions? Let our experts help!
  • Description

    Baader 2" 90 Degree Erect Amici Prism Diagonal

    The Baader Amici Prism as long been a popular choice for generating refractor and Cassegrain-style telescope images that are oriented correctly. However, to produce an amici prism, a much more complex and higher level of quality is needed compared to the production of a standard mirror diagonal or a right angle prism diagonal. The faces of a prism must be polished smooth, flat, and located at the correct positions and angles with extreme accuracy. The sharp roof edge needs to be made so fine that it practically vanishes. Even supposed premium quality amici prisms often create images that are astigmatic or asymmetrical and show a distinct central diffraction spike. The roof edge diffraction spike of this Amici Diagonal is exceptionally faint! Baader's 2" Amici Erect Image Diagonal is made with a fine, large-sized prism.

    Baader Planetarium produces easily the finest amici prism star diagonal available today. The prism has been made to the proper specifications, in order to provide image quality that suffers from none of the defects found in commonly available correct image amici diagonals. The finest 7-Layer Multi-Coatings ensure the image is bright and contrasty, and the oversized prism provides the full clear aperture of 1.25"! The precision machined aluminum housing provides a stress-free mounting and precise location for the prism. This correct-image diagonal is just the thing for high-quality terrestrial viewing.

    Correct image diagonals have been used traditionally for terrestrial viewing and limited to low (under 100X) magnifications. The high quality of this diagonal lets you use much higher magnifications without aberrations or image breakdown.


    Supplier SKU


    Shipping Restrictions

    Only ships in contiguous USA.

    What's Included

    • Baader Planetarium 2" Erect Prism Amici Diagonal - 90º
    • 2" to 1.25" Adapter

  • Dimensions & Specifications

    • Diagonal Type: Erect Image
    • Telescope Side: 2" barrel
    • Eyepiece Side: 2" barrel

  • Product Guarantee

    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    This product has a 2 year manufacturer's warranty against defects is provided. If you have specific questions about this product's warranty please contact Alpine Astronomical's Customer Service department by email at service@alpineastro.com.

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

  • Stars


    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars

    Most Helpful Reviews

    Most Critical Reviews

    All Reviews

    Displaying Reviews 1-10 of